我试图用一个表格来显示一个新的音符模态。我正在将包含表单的JSX传递给模态,输入的onChange方法触发但不更新状态。我看到事件使用console.log以及name和value的值启动,但状态不会更新。任何帮助将不胜感激。
Modal.js
import React from "react";
import { Button, Modal, ModalHeader, ModalBody, ModalFooter } from "reactstrap";
export default function MyModal(props) {
return (
<Modal isOpen={props.isOpen}>
<ModalHeader>{props.modalTitle}</ModalHeader>
<ModalBody>{props.modalBody}</ModalBody>
<ModalFooter>
<Button color="primary" onClick={props.modalAction}>
Yes
</Button>{" "}
<Button color="secondary" onClick={props.handleModal}>
Cancel
</Button>
</ModalFooter>
</Modal>
);
}
LeadView.js
export class LeadView extends Component {
constructor() {
super()
this.state = {
result: '',
message: '',
note: '',
modal: false,
modalTitle: '',
modalBody: '',
modalAction: '',
}
}
handleChange = event => {
console.log('name', event.target.name)
console.log('value', event.target.value)
const { name, value } = event.target
this.setState({
[name]: value,
})
}
handleModalForNote = () => {
this.setState({
modal: !this.state.modal,
modalTitle: 'New Note',
modalBody: (
<div className="form-group">
<input
type="text"
className="form-control"
onChange={this.handleChange}
name="note"
value={this.state.note}
/>
</div>
),
modalAction: this.handleCallClick,
})
}
render() {
return (
<Fragment>
<MyModal
handleModal={this.handleModalClose}
modalAction={this.state.modalAction}
isOpen={this.state.modal}
modalBody={this.state.modalBody}
modalTitle={this.state.modalTitle}
modalOptions={this.state.modalOptions}
/>
<button onClick={this.handleModalForNote} className="btn btn-primary">
Write Note
</button>
</Fragment>
)
}
}
当您将函数handleChange赋予输入时,您只传递函数本身。然后,当您将该JSX提供给Modal时,它的执行理念是它应该在Modal Component中执行它所执行的任何代码。您需要做的是通过执行当前上下文
onChange={this.handleChange .bind(this)}
这会将组件的“上下文”绑定到函数,以便现在无论在何处调用它,它都将在LeadView组件的上下文中执行。
你应该记住你传递函数的其他地方。